
WTR2-640
Chapter 3: Installation
20 of 46
Connect the TO PROCESS hookup to the entrance of the process and the FROM PROCESS
hookup to the exit of the process. Connect the COOLING WATER SUPPLY to your plant
water supply. Connect the COOLING WATER DRAIN line to an open drain, or to the return
line of your central water system. If returning to a central water system, use a
condensate/return tank to avoid a standing water column on the heat exchanger drain line.
If you are routing the drain line to an open drain, make sure that the line is
directed away from personnel to avoid scalding.
Carefully select connecting lines and connectors between the Upright unit
and the process to best meet the needs and requirements of your
application.
Make sure lines and connectors have a service rating of at least 100 psig
(689.5 kPa/6.9 bars), and a temperature rating at least equal to the
maximum operating temperature of your Upright unit.
To prevent debris from fouling reservoir fluid, the Upright unit is
equipped with an internal vent on the reservoir tank. Use the plug
provided to close off the external fill port after filling the unit with heat
transfer fluid.
3-5 Initial Start-up
Starting the Hot Oil TCU
Before you begin your heating process, perform the following startup procedures. Doing so
ensures that all air is vented from the system to prevent fluid degradation and damage to the
heater.
1. Add recommended heat transfer fluid to the reservoir tank until the level is near the
top of the sight glass.
2. If so equipped, open the manual vent valve on the back of the unit.
3. Push the PUMP START button to start the pump, then check motor rotation by
observing the pressure gauge.
If the gauge indicates positive pressure, rotation is correct. If not, disconnect power
and reverse the incoming power leads.
4. As fluid is drawn out of the reservoir tank to fill the process, the fluid level falls in
the tank. Continue to add fluid to maintain the level about four inches (4”/10 cm)
from the bottom of the sight glass.
Air and thermal fluid vent through the vent solenoid or the manual vent valve and
into the reservoir tank.
You must purge the system of air before the heating cycle. Personal injury
and system damage can occur from a pressurized system.
Make sure that the reservoir tank vent port
is not plugged
.
The reservoir
tank must
never
be pressurized!
5. When the unit has built at least five (5) psi (34.5 kPa) of pressure, wait two (2)
minutes, then select a set point of 100°F (38ºC) and switch the unit into AUTO mode.
As the oil warms up, viscosity decreases and pressure falls.
6. Increase the set point to 150ºF, then 200ºF (65ºC, then 93ºC) at two-minute intervals.